# Coal- and Oil-Fired Electric Utility Steam Generating Units (Mercury and Air Toxics Standards) — EPA NESHAP Source Category Applicability Crosswalk

For Coal- and Oil-Fired Electric Utility Steam Generating Units (Mercury and Air Toxics Standards), cfr subpart is 40 CFR 63 Subpart UUUUU; source type is major sources; original final rule date is 2012-02-16; most recent amendment date is 2026-02-24; rtr status is completed, recorded from its source on 2026-08-15.

- **source category:** Coal- and Oil-Fired Electric Utility Steam Generating Units (Mercury and Air Toxics Standards)
- **cfr subpart:** 40 CFR 63 Subpart UUUUU
- **source type:** major sources _(our reading, not quoted from the source)_
- **original final rule date:** 2012-02-16
- **most recent amendment date:** 2026-02-24
- **rtr status:** completed
- **key haps regulated:** mercury and other hazardous air pollutants _(verified: appears in the quote below)_
- **epa category url:** https://www.epa.gov/stationary-sources-air-pollution/mercury-and-air-toxics-standards _(our reading, not quoted from the source)_

## What the source says

> EPA set technology-based emissions standards for mercury and other hazardous air pollutants (HAP) emitted by units with a capacity of more than 25 megawatts.

## Source

- https://www.epa.gov/stationary-sources-air-pollution/mercury-and-air-toxics-standards

Last verified: 2026-08-15. Review by: 2026-12-13.
Part of [EPA NESHAP Source Category Applicability Crosswalk](https://referencesource.org/neshap-source-category-crosswalk/).